Your Intelligence score increases by 1, and your Charisma score increases by 2.

Yuan-tiefs mature at the same rate as humans but live a few years longer.

Yuan-tiefs tend toward evil.

Yuan-tiefs are about the same size and build as humans. Your size is Medium.

Your base walking speed is 30 feet.

Thanks to your infernal and reptile heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You have resistance to fire and poison damage.

You know the thaumaturgy cantrip and poison spray cantrip. You can cast animal friendship an unlimited number of times, but you can target only snakes with it.

When you reach 3rd level, you can cast the hellish rebuke spell as a 2nd-level spell once with this trait and regain the ability to do so when you finish a long rest.

Charisma is your spellcasting ability for these spells.

You can speak, read, and write Common, Abyssal, Draconic, and Infernal.